/**
 * 处理小程序富文本里的图片宽度自适应
 * 1.去掉img标签里的style、width、height属性
 * 2.img标签添加style属性：max-width:100%;height:auto
 * 3.修改所有style里的width属性为max-width:100%
 * 4.去掉<br/>标签
 */
export function formatRichText(html: string): string {
    let newContent = html.replace(/<img[^>]*>/gi, function (match) {
        match = match.replace(/style="[^"]+"/gi, '').replace(/style='[^']+'/gi, '')
        match = match.replace(/width="[^"]+"/gi, '').replace(/width='[^']+'/gi, '')
        match = match.replace(/height="[^"]+"/gi, '').replace(/height='[^']+'/gi, '')
        return match
    })
    newContent = newContent.replace(/style="[^"]+"/gi, function (match) {
        match = match.replace(/width:[^;]+;/gi, 'max-width:100%;').replace(/width:[^;]+;/gi, 'max-width:100%;')
        return match
    })
    newContent = newContent.replace(/<br[^>]*\/>/gi, '')
    newContent = newContent.replace(/\<img/gi, '<img style="max-width:100%;height:auto;display:block;margin:10px 0;"')
    return newContent
}

export default {
    formatRichText
}